C++ RenderFrameParent类代码示例

NS_IMETHODIMP
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                     const nsRect&           aDirtyRect,
                                     const nsDisplayListSet& aLists)
{
  if (!IsVisibleForPainting(aBuilder))
    return NS_OK;

  // If mozpasspointerevents is set, then we should allow subdocument content
  // to handle events even if we're pointer-events:none.
  if (aBuilder->IsForEventDelivery() && !PassPointerEventsToChildren())
    return NS_OK;

  nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
  NS_ENSURE_SUCCESS(rv, rv);

  if (!mInnerView)
    return NS_OK;

  nsFrameLoader* frameLoader = FrameLoader();
  if (frameLoader) {
    RenderFrameParent* rfp = frameLoader->GetCurrentRemoteFrame();
    if (rfp) {
      return rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
    }
  }

  nsIView* subdocView = mInnerView->GetFirstChild();
  if (!subdocView)
    return NS_OK;

  nsCOMPtr<nsIPresShell> presShell = nullptr;

  nsIFrame* subdocRootFrame = subdocView->GetFrame();
  if (subdocRootFrame) {
    presShell = subdocRootFrame->PresContext()->PresShell();
  }
  // If painting is suppressed in the presshell, we try to look for a better
  // presshell to use.
  if (!presShell || (presShell->IsPaintingSuppressed() &&
                     !aBuilder->IsIgnoringPaintSuppression())) {
    // During page transition mInnerView will sometimes have two children, the
    // first being the new page that may not have any frame, and the second
    // being the old page that will probably have a frame.
    nsIView* nextView = subdocView->GetNextSibling();
    nsIFrame* frame = nullptr;
    if (nextView) {
      frame = nextView->GetFrame();
    }
    if (frame) {
      nsIPresShell* ps = frame->PresContext()->PresShell();
      if (!presShell || (ps && !ps->IsPaintingSuppressed())) {
        subdocView = nextView;
        subdocRootFrame = frame;
        presShell = ps;
      }
    }
    if (!presShell) {
      // If we don't have a frame we use this roundabout way to get the pres shell.
      if (!mFrameLoader)
        return NS_OK;
      nsCOMPtr<nsIDocShell> docShell;
      mFrameLoader->GetDocShell(getter_AddRefs(docShell));
      if (!docShell)
        return NS_OK;
      docShell->GetPresShell(getter_AddRefs(presShell));
      if (!presShell)
        return NS_OK;
    }
  }

  nsPresContext* presContext = presShell->GetPresContext();

  nsDisplayList childItems;

  int32_t parentAPD = PresContext()->AppUnitsPerDevPixel();
  int32_t subdocAPD = presContext->AppUnitsPerDevPixel();

  nsRect dirty;
  if (subdocRootFrame) {
    nsIDocument* doc = subdocRootFrame->PresContext()->Document();
    nsIContent* root = doc ? doc->GetRootElement() : nullptr;
    nsRect displayPort;
    if (root && nsLayoutUtils::GetDisplayPort(root, &displayPort)) {
      dirty = displayPort;
    } else {
      // get the dirty rect relative to the root frame of the subdoc
      dirty = aDirtyRect + GetOffsetToCrossDoc(subdocRootFrame);
      // and convert into the appunits of the subdoc
      dirty = dirty.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);
    }

    aBuilder->EnterPresShell(subdocRootFrame, dirty);
  }

  nsRect subdocBoundsInParentUnits =
    mInnerView->GetBounds() + aBuilder->ToReferenceFrame(this);

  if (subdocRootFrame) {
    rv = subdocRootFrame->
//.........这里部分代码省略.........

void
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                     const nsRect&           aDirtyRect,
                                     const nsDisplayListSet& aLists)
{
  if (!IsVisibleForPainting(aBuilder))
    return;

  nsFrameLoader* frameLoader = FrameLoader();
  RenderFrameParent* rfp = nullptr;
  if (frameLoader) {
    rfp = frameLoader->GetCurrentRemoteFrame();
  }

  // If we are pointer-events:none then we don't need to HitTest background
  bool pointerEventsNone = StyleVisibility()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE;
  if (!aBuilder->IsForEventDelivery() || !pointerEventsNone) {
    nsDisplayListCollection decorations;
    DisplayBorderBackgroundOutline(aBuilder, decorations);
    if (rfp) {
      // Wrap background colors of <iframe>s with remote subdocuments in their
      // own layer so we generate a ColorLayer. This is helpful for optimizing
      // compositing; we can skip compositing the ColorLayer when the
      // remote content is opaque.
      WrapBackgroundColorInOwnLayer(aBuilder, this, decorations.BorderBackground());
    }
    decorations.MoveTo(aLists);
  }

  bool passPointerEventsToChildren = false;
  if (aBuilder->IsForEventDelivery()) {
    passPointerEventsToChildren = PassPointerEventsToChildren();
    // If mozpasspointerevents is set, then we should allow subdocument content
    // to handle events even if we're pointer-events:none.
    if (pointerEventsNone && !passPointerEventsToChildren) {
      return;
    }
  }

  // If we're passing pointer events to children then we have to descend into
  // subdocuments no matter what, to determine which parts are transparent for
  // elementFromPoint.
  if (!mInnerView ||
      (!aBuilder->GetDescendIntoSubdocuments() && !passPointerEventsToChildren)) {
    return;
  }

  if (rfp) {
    rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
    return;
  }

  nsView* subdocView = mInnerView->GetFirstChild();
  if (!subdocView)
    return;

  nsCOMPtr<nsIPresShell> presShell = nullptr;

  nsIFrame* subdocRootFrame = subdocView->GetFrame();
  if (subdocRootFrame) {
    presShell = subdocRootFrame->PresContext()->PresShell();
  }
  // If painting is suppressed in the presshell, we try to look for a better
  // presshell to use.
  if (!presShell || (presShell->IsPaintingSuppressed() &&
                     !aBuilder->IsIgnoringPaintSuppression())) {
    // During page transition mInnerView will sometimes have two children, the
    // first being the new page that may not have any frame, and the second
    // being the old page that will probably have a frame.
    nsView* nextView = subdocView->GetNextSibling();
    nsIFrame* frame = nullptr;
    if (nextView) {
      frame = nextView->GetFrame();
    }
    if (frame) {
      nsIPresShell* ps = frame->PresContext()->PresShell();
      if (!presShell || (ps && !ps->IsPaintingSuppressed())) {
        subdocView = nextView;
        subdocRootFrame = frame;
        presShell = ps;
      }
    }
    if (!presShell) {
      // If we don't have a frame we use this roundabout way to get the pres shell.
      if (!mFrameLoader)
        return;
      nsCOMPtr<nsIDocShell> docShell;
      mFrameLoader->GetDocShell(getter_AddRefs(docShell));
      if (!docShell)
        return;
      presShell = docShell->GetPresShell();
      if (!presShell)
        return;
    }
  }

  nsPresContext* presContext = presShell->GetPresContext();

  int32_t parentAPD = PresContext()->AppUnitsPerDevPixel();
  int32_t subdocAPD = presContext->AppUnitsPerDevPixel();
//.........这里部分代码省略.........

void
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                     const nsRect&           aDirtyRect,
                                     const nsDisplayListSet& aLists)
{
  if (!IsVisibleForPainting(aBuilder))
    return;

  nsFrameLoader* frameLoader = FrameLoader();
  RenderFrameParent* rfp = nullptr;
  if (frameLoader) {
    rfp = frameLoader->GetCurrentRenderFrame();
  }

  // If we are pointer-events:none then we don't need to HitTest background
  bool pointerEventsNone =
    StyleUserInterface()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE;
  if (!aBuilder->IsForEventDelivery() || !pointerEventsNone) {
    nsDisplayListCollection decorations;
    DisplayBorderBackgroundOutline(aBuilder, decorations);
    if (rfp) {
      // Wrap background colors of <iframe>s with remote subdocuments in their
      // own layer so we generate a ColorLayer. This is helpful for optimizing
      // compositing; we can skip compositing the ColorLayer when the
      // remote content is opaque.
      WrapBackgroundColorInOwnLayer(aBuilder, this, decorations.BorderBackground());
    }
    decorations.MoveTo(aLists);
  }

  if (aBuilder->IsForEventDelivery() && pointerEventsNone) {
    return;
  }

  // If we're passing pointer events to children then we have to descend into
  // subdocuments no matter what, to determine which parts are transparent for
  // hit-testing or event regions.
  bool needToDescend = aBuilder->GetDescendIntoSubdocuments();
  if (!mInnerView || !needToDescend) {
    return;
  }

  if (rfp) {
    rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
    return;
  }

  nsCOMPtr<nsIPresShell> presShell =
    GetSubdocumentPresShellForPainting(
      aBuilder->IsIgnoringPaintSuppression() ? IGNORE_PAINT_SUPPRESSION : 0);

  if (!presShell) {
    return;
  }

  nsIFrame* subdocRootFrame = presShell->GetRootFrame();

  nsPresContext* presContext = presShell->GetPresContext();

  int32_t parentAPD = PresContext()->AppUnitsPerDevPixel();
  int32_t subdocAPD = presContext->AppUnitsPerDevPixel();

  nsRect dirty;
  bool haveDisplayPort = false;
  bool ignoreViewportScrolling = false;
  nsIFrame* savedIgnoreScrollFrame = nullptr;
  if (subdocRootFrame) {
    // get the dirty rect relative to the root frame of the subdoc
    dirty = aDirtyRect + GetOffsetToCrossDoc(subdocRootFrame);
    // and convert into the appunits of the subdoc
    dirty = dirty.ScaleToOtherAppUnitsRoundOut(parentAPD, subdocAPD);

    if (nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame()) {
      nsIScrollableFrame* rootScrollableFrame = presShell->GetRootScrollFrameAsScrollable();
      MOZ_ASSERT(rootScrollableFrame);
      // Use a copy, so the dirty rect doesn't get modified to the display port.
      nsRect copy = dirty;
      haveDisplayPort = rootScrollableFrame->DecideScrollableLayer(aBuilder,
                          &copy, /* aAllowCreateDisplayPort = */ true);
      if (!gfxPrefs::LayoutUseContainersForRootFrames()) {
        haveDisplayPort = false;
      }

      ignoreViewportScrolling = presShell->IgnoringViewportScrolling();
      if (ignoreViewportScrolling) {
        savedIgnoreScrollFrame = aBuilder->GetIgnoreScrollFrame();
        aBuilder->SetIgnoreScrollFrame(rootScrollFrame);
      }
    }

    aBuilder->EnterPresShell(subdocRootFrame, pointerEventsNone);
  } else {
    dirty = aDirtyRect;
  }

  DisplayListClipState::AutoSaveRestore clipState(aBuilder);
  if (ShouldClipSubdocument()) {
    clipState.ClipContainingBlockDescendantsToContentBox(aBuilder, this);
  }

//.........这里部分代码省略.........

NS_IMETHODIMP
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                     const nsRect&           aDirtyRect,
                                     const nsDisplayListSet& aLists)
{
  if (!IsVisibleForPainting(aBuilder))
    return NS_OK;

  if (aBuilder->IsForEventDelivery() &&
      GetStyleVisibility()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE)
    return NS_OK;

  nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
  NS_ENSURE_SUCCESS(rv, rv);

  if (!mInnerView)
    return NS_OK;

  nsFrameLoader* frameLoader = FrameLoader();
  if (frameLoader) {
    RenderFrameParent* rfp = frameLoader->GetCurrentRemoteFrame();
    if (rfp) {
      return rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
    }
  }

  nsIView* subdocView = mInnerView->GetFirstChild();
  if (!subdocView)
    return NS_OK;

  nsCOMPtr<nsIPresShell> presShell = nsnull;

  nsIFrame* subdocRootFrame =
    static_cast<nsIFrame*>(subdocView->GetClientData());

  if (subdocRootFrame) {
    presShell = subdocRootFrame->PresContext()->PresShell();
  }
  // If painting is suppressed in the presshell, we try to look for a better
  // presshell to use.
  if (!presShell || (presShell->IsPaintingSuppressed() &&
                     !aBuilder->IsIgnoringPaintSuppression())) {
    // During page transition mInnerView will sometimes have two children, the
    // first being the new page that may not have any frame, and the second
    // being the old page that will probably have a frame.
    nsIView* nextView = subdocView->GetNextSibling();
    nsIFrame* frame = nsnull;
    if (nextView) {
      frame = static_cast<nsIFrame*>(nextView->GetClientData());
    }
    if (frame) {
      nsIPresShell* ps = frame->PresContext()->PresShell();
      if (!presShell || (ps && !ps->IsPaintingSuppressed())) {
        subdocView = nextView;
        subdocRootFrame = frame;
        presShell = ps;
      }
    }
    if (!presShell) {
      // If we don't have a frame we use this roundabout way to get the pres shell.
      if (!mFrameLoader)
        return NS_OK;
      nsCOMPtr<nsIDocShell> docShell;
      mFrameLoader->GetDocShell(getter_AddRefs(docShell));
      if (!docShell)
        return NS_OK;
      docShell->GetPresShell(getter_AddRefs(presShell));
      if (!presShell)
        return NS_OK;
    }
  }

  nsPresContext* presContext = presShell->GetPresContext();

  nsDisplayList childItems;

  PRInt32 parentAPD = PresContext()->AppUnitsPerDevPixel();
  PRInt32 subdocAPD = presContext->AppUnitsPerDevPixel();

  nsRect dirty;
  if (subdocRootFrame) {
    // get the dirty rect relative to the root frame of the subdoc
    dirty = aDirtyRect + GetOffsetToCrossDoc(subdocRootFrame);
    // and convert into the appunits of the subdoc
    dirty = dirty.ConvertAppUnitsRoundOut(parentAPD, subdocAPD);

    aBuilder->EnterPresShell(subdocRootFrame, dirty);
  }

  // The subdocView's bounds are in appunits of the subdocument, so adjust
  // them.
  nsRect subdocBoundsInParentUnits =
    subdocView->GetBounds().ConvertAppUnitsRoundOut(subdocAPD, parentAPD);

  // Get the bounds of subdocView relative to the reference frame.
  subdocBoundsInParentUnits = subdocBoundsInParentUnits +
                              mInnerView->GetPosition() +
                              GetOffsetToCrossDoc(aBuilder->ReferenceFrame());

  if (subdocRootFrame && NS_SUCCEEDED(rv)) {
//.........这里部分代码省略.........

NS_IMETHODIMP
nsSubDocumentFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                     const nsRect&           aDirtyRect,
                                     const nsDisplayListSet& aLists)
{
  if (!IsVisibleForPainting(aBuilder))
    return NS_OK;

  if (aBuilder->IsForEventDelivery() &&
      GetStyleVisibility()->mPointerEvents == NS_STYLE_POINTER_EVENTS_NONE)
    return NS_OK;

  nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
  NS_ENSURE_SUCCESS(rv, rv);

  if (!mInnerView)
    return NS_OK;

#ifdef MOZ_IPC
  nsFrameLoader* frameLoader = FrameLoader();
  if (frameLoader) {
    RenderFrameParent* rfp = frameLoader->GetCurrentRemoteFrame();
    if (rfp) {
      return rfp->BuildDisplayList(aBuilder, this, aDirtyRect, aLists);
    }
  }
#endif

  nsIView* subdocView = mInnerView->GetFirstChild();
  if (!subdocView)
    return NS_OK;

  nsCOMPtr<nsIPresShell> presShell = nsnull;

  nsIFrame* subdocRootFrame =
    static_cast<nsIFrame*>(subdocView->GetClientData());

  if (subdocRootFrame) {
    presShell = subdocRootFrame->PresContext()->PresShell();
  }
  // If painting is suppressed in the presshell, we try to look for a better
  // presshell to use.
  if (!presShell || (presShell->IsPaintingSuppressed() &&
                     !aBuilder->IsIgnoringPaintSuppression())) {
    // During page transition mInnerView will sometimes have two children, the
    // first being the new page that may not have any frame, and the second
    // being the old page that will probably have a frame.
    nsIView* nextView = subdocView->GetNextSibling();
    nsIFrame* frame = nsnull;
    if (nextView) {
      frame = static_cast<nsIFrame*>(nextView->GetClientData());
    }
    if (frame) {
      nsIPresShell* ps = frame->PresContext()->PresShell();
      if (!presShell || (ps && !ps->IsPaintingSuppressed())) {
        subdocView = nextView;
        subdocRootFrame = frame;
        presShell = ps;
      }
    }
    if (!presShell) {
      // If we don't have a frame we use this roundabout way to get the pres shell.
      if (!mFrameLoader)
        return NS_OK;
      nsCOMPtr<nsIDocShell> docShell;
      mFrameLoader->GetDocShell(getter_AddRefs(docShell));
      if (!docShell)
        return NS_OK;
      docShell->GetPresShell(getter_AddRefs(presShell));
      if (!presShell)
        return NS_OK;
    }
  }

  nsPresContext* presContext = presShell->GetPresContext();

  nsDisplayList childItems;

  PRInt32 parentAPD = PresContext()->AppUnitsPerDevPixel();
  PRInt32 subdocAPD = presContext->AppUnitsPerDevPixel();

  nsIFrame* subdocRootScrollFrame = presShell->GetRootScrollFrame();

  nsRect dirty;
  if (subdocRootFrame) {
    if (presShell->UsingDisplayPort() && subdocRootScrollFrame) {
      dirty = presShell->GetDisplayPort();

      // The visual overflow rect of our viewport frame unfortunately may not
      // intersect with the displayport of that frame. For example, the scroll
      // offset of the frame may be (0, 0) so that the visual overflow rect
      // is (0, 0, 800px, 500px) while the display port may have its top-left
      // corner below y=500px.
      //
      // We have to force the frame to have a little faith and build a display
      // list anyway. (see nsIFrame::BuildDisplayListForChild for the short-
      // circuit code we are evading here).
      //
      subdocRootScrollFrame->AddStateBits(
        NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO);
//.........这里部分代码省略.........